Stock-oiler



Patented Oct. 25, |898. W. A. JENKINS.

STOCK OILER.

(Application tiled Sept. 2B, 1897.)

(N0 Model.)

we News Parmis cp., PHorauTHo., wAswNGToN, n. c,

VILLIAM A. JENKINS, OF JACKSON, MISSISSIPPI, ASSIGNOR OF ONE-HALF TOJOI-IN E. JENKINS, OF MCOOMB, MISSISSIPPI.

STOCK-OILER.

SPECIFICATION forming part of Letters Patent No. 613,150, dated October25, 1898.

l Application iiled September 28, 1897. Serial No. 653,347. (No model.)

To a/ZZ whom t may concern.:

Be it known that I, WILLIAM A. J ENKINs,` residing at Jackson, in thecounty of Hinds and State of Mississippi, have invented a new and usefulStock-Oiler, of which the following is a specification. Y

My invention relates to stocks for holding dies for cutting threads onbolts or pipes by hand, and has for its object to furnish such stockswith attached oilers, whereby the dies, the bolt, and the thread beingcut may be oiled during the operation of cutting without the necessityof using a separate oiler.

With this object in View my invention consists in certain improvementsin the details of construction and in the arrangement and combination ofthe parts composing the diestock, as will be hereinafter fullydescribed, and afterward specifically pointed out in the claim. y

In order to enable others skilled in the art to which my invention mostynearly appertains to make and use the same, I will now proceed todescribe its construction and operation, reference being had to theaccompanying drawings, in which- Figure 1 is a vertical longitudinalsectional' view of a stock and dies constructed in accordance with myinvention in position to opcrate upon a bolt or pipe. Fig. 2 is asimilar view, on an enlarged scale, of one of the handles detached. Fig.3 is a detail perspective View illustrating the ejection plunger detached. Fig. 4 is a detail perspective view illustrating the hollowdischarge-plu g and discharge-tube detached. Fig. 5 is a view ofaslightly-modified construction of the plunger and its connections. t

Referring to the drawings by letters, A is the stock, provided with asuitable box or receptacle to receive the screw-cutting dies B B, saiddies being retained in position by a cap O, attached to the stock byscrews D E, the cap C being adapted to be turned on the screw I) touncover the die-box and the screw E being a thumb-screw for conveniencein inserting and removing it for securing or removing the dies from thebox.

F represents the pipe or bolt to be threaded by the dies, it being shownin Fig. 1 in the proper position to be operated upon, the

guide-stock being provided with aguidesleeve G to properly center thepipe or bolt in the dies. The stock is provided withoppositely-projecting sockets H, in which the operating-handles are tobe threaded.

All the parts hereinbefore described may be of any well-known orapproved construe` tion, as they form no part of my invention, with theexception which will be hereinafter noted in reference to adischarge-opening through the stock to admit the oil to the dies andwork.

I and J are the handles, which are usually made of asolid bar of metal;butin constructing a stock in conformity with my invention one or bothof these handles may be hollow. In the drawings both are shown hollow;but this is not absolutely necessary, as one of them may be made solid,if desired.

In carrying out my invention I construct one of these handles to form anoiler; but, as hereinbefore stated, both handles may be so constructed,although but one oiler is necessary and two would probably not bedesirable.

In the drawings I have shown the handle I` constructed to form the oilerand the handle J formed hollow, with its end closed. The construction ofthe handle J is a matter of indifference, as it might be made with itsouter end open or with such an open end provided with a plug, leaving aninterior receptacle for any small articles the operator might desire toplace therein. It is probable that the better way to construct thehandle J when the handle I is formed into an oiler would besubstantially as shown in Fig. 1, it being made hollow rather than solidto more nearly balance the weight of the handle I. The handle I at thestock end has an interior thread to receive the exterior thread of ahollowplug K, the bore of which is contracted at the inner end toreceive the stein L of a checkn valve M, while the other end of the boreof said plug is threaded to receive a nozzle N, upon which is placed asection of rubber tubing O, which when extended just reaches theinterior of the stock through a discharge-port P therein. A spring Q isseated between the valve M and nozzle N, which serves to normally holdthe check-valve to its seat in its inner or closed position.

IOO

vand it is desired to oil the dies The outer end of the handle I isclosed by a screw-cap R, through which a rod S passes, carrying on itsinner end, inside of the han` dle I, a plunger or piston T, and on itsouter end a flat disk-head U, for conveniencein 0peration. A spring V,coiled around the rod S, has its bearing between the outer end of thescrew-cap R and the inner side of the disk U and serves to normally holdthe plunger in its outer position. The interior of the handle I forms anoil chamber or reservoir W. In Fig. 1 I have shown the screw-cap R assecured upon the outer surface of the handle I, while in themodiiication shown in Fig. 5 I have shown the said screw-cap as securedon the inside. This modification, with the other slight change in theconstruction of the disk U, as shownin said Fig. 5, permits of thecovering or concealing of the spring V.

The operation of my invention may be described as follows: When thestock is in position for cutting threads, as shown in Fig. 1, and work,it is only necessary to press the thumb or finger against the disk U andforce the plunger T slightly inward against the action of the spring V.This will cause the check-valve M to open downward and asmall quantityof oil to be discharged through the nozzle N, tube O, and discharge-portP upon the work at the point where the dies are operating. The releaseof the disk U will permit the spring V to again return the plunger Ttoits outer position, part of the air behind the plunger escapingthrough a small channel X, provided through the cap R for that purpose,and part past the plunger into the cylinder to take the place of theexpelled oil, the check-valve preventing the entrance of air through thedischarge-tube and maintaining said tube always full of oil. As soon asthe outward pressure upon the check-valve ceases the spring Q willreturn it to its seat and close it, thus preventing further discharge orleakage of oil.

The advantages attending the use of my invention will be obvious fromthe foregoing description. It dispenses with the necessity of having tostop work to apply oil from an oil-can, which is generally a very dirtyarrangement and a nuisance to every machinist, plumber, or steam-fitter,being further objectionable on account of the fact that oil applied froma can seldom, it' ever, strikes the right spot.

My invention may be applied to a stock at a nominal cost, and by placingthe oil at the necessary point economy in the use of oil is assured. Itis unnecessary to stop cutting the thread until it is entirelycompleted, and much time is saved which has often heretofore been wastedin looking about the shop for a misplaced oil-can.

While I have illustrated and described what I believe to be the bestmeans known to me for carrying out my invention, I do not wish to beunderstood as limiting myself to the exact construction and arrangementshown and described, but hold that such slight changes and variations asmight suggest themselves to the ordinary mechanic would properly fallwithin the limit and scope of my invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

A die-stock having a hollow handle forming an oil-cylinder, providedwith an air-vent at its outer end and a discharge-tube leading from itsinner end to the dies, an inwardopening spring-closed valve in the innerend of the discharge-tube, a plunger or piston in the outer end of thecylinder, constructed to permit the passage of air and at the same timeprevent the escape of oil, and a spring tending to normally maintain theplunger or piston in its outer position, substantially as described.

WILLIAM A. JENKINS.

Witnesses:

D. I-I. HOLDER, O. J. WAITE.

